At 12:50 the iteration time for checking a potential solution is comprised on coming up with a code change in the LLM, then checking the compilation. In big enterprises, the build time for continuous integration - CI can be multi-minute, which actually dwarfs the LLM time and kills the iteration time. You need to make sure that you are using the same language server tools that you would as a person using the IDE... where they do incremental change detection and you get feedback almost immediately instead of relying on your CLI tools that are part of CI (since they are so slow).
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language server
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What you want is dim - speed -- fast for your iteration cycle time